Entertain disheartened rabble with good beer (6)
I believe the answer is:
regale
'entertain' is the definition.
(thesaurus)
'disheartened rabble with good beer' is the wordplay.
'disheartened' suggests removing the centre.
'with' is a charade indicator (letters next to each other).
'good' becomes 'g' (abbreviation).
'beer' becomes 'ale' (I've seen this before).
'rabble' with its centre removed is 're'.
're'+'g'+'ale'='REGALE'
(Other definitions for regale that I've seen before include "Fete" , "Amuse with stories" , "Entertain royally" , "Feast, give pleasure to" , "Feed or entertain well" .)